Today, a number of users are reporting that Microsoft's Your Phone service isn't working, and indeed, it's not. The news comes just days after Samsung launched the Galaxy Note10 with all-new 'Link to Windows' features that make it easier to connect to the service.
On a good day, Your Phone allows you to send and receive SMS messages, interact with the most recent 25 photos on your device, and even mirror your smartphone's screen if you have a compatible phone and a compatible PC. Today though, users are finding that they can't connect to it. The Microsoft 365 Service health page says the following:
User Impact: Users may experience connection problems and errors when using the Your Phone app.
Current status: We've identified an issue causing connection problems for the Your Phone app. Users may receive "Can't connect" or other error banners when using the app. We're actively investigating to identify the cause of the problem and develop a remediation plan.
Start time: Monday, August 26, 2019, at 7:00 AM UTC
It's unclear when this issue will be resolved, although it's been going on all day so it should be relatively soon. In the meantime, you can check out the many other similar services, such as Android Messages for Web - which lets you send and receive messages through your browser - and Dell Mobile Connect, which has messaging support as well as screen mirroring support.